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Chaosuu

Backend developer and automation specialist with expertise in Python, web scraping, and security testing. I build efficient solutions for complex technical challenges. Core Skills: - Python automation with Playwright and Selenium - FastAPI backend development and REST APIs - Browser extension development (published on Chrome/Firefox stores) - Web scraping and data extraction - Antibot systems testing and security consulting - MySQL/SQL database design and optimization Experience: - Active bug bounty researcher on HackerOne - Published browser extensions with real users - 2+ years of hands-on development experience - Specialized knowledge in bypass techniques and security testing I deliver clean, efficient code and focus on practical solutions. Available for both short-term projects and ongoing contracts. I accept cryptocurrency payments only (USDT/BTC/ETH). Looking for freelance opportunities in automation, backend development, API integration, and security testing.